Field emission characteristic studies of chemical vapor deposited diamond films

Chen, Chi-Lin; Chen, Chau-Shu; Lue, Juh Tzeng

doi:10.1016/s0038-1101(00)00139-8

Cited by 10 publications

(4 citation statements)

References 26 publications

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“…The discrepancy in the intermediate voltage range can be explained with thermionic emission [19] and Schottky emission [17,20] The Fowler-Nordheim (FN) equation [17] has been widely used to analyze field emission from diamond surfaces [41]. Chen et al [24] developed a specific theoretical model for field emission from p-type diamond surfaces based on the theory of Stratton [42].…”

Section: Electro-mechanical Characterization Of Nanomembranesmentioning

confidence: 99%

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Ultrananocrystalline Diamond Membranes for Detection of High-Mass Proteins

et al. 2016

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Mechanical resonators realized on the nanoscale by now offer applications in mass sensing of bio-molecules with extraordinary sensitivity. The general idea is that perfect mechanical mass sensors should be of extremely small size to achieve zepto-or yocto-gram sensitivity in weighing single molecules similar to a classical scale. However, the small effective size and long response time for weighing biomolecules with a cantilever restricts their usefulness as a high-throughput method. Commercial mass spectrometry (MS) on the other hand, such as electro-spray ionization (ESI)-MS and matrix-assisted laser desorption/ionization (MALDI)-time of flight (TOF)-MS and their charge amplifying

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Section: Electro-mechanical Characterization Of Nanomembranesmentioning

confidence: 99%

“…Following this model the total field emission current density from a freestanding borondoped diamond nanomembrane can be modeled by [24,25]…”

Section: Electro-mechanical Characterization Of Nanomembranesmentioning

confidence: 99%

Ultrananocrystalline Diamond Membranes for Detection of High-Mass Proteins

et al. 2016

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“…Some scientists usually use table values of work functions to determine field‐enhancement factors 1–4. Another approach consists in calculation of the field‐enhancement factor using microscopic images of emitters and obtaining the work function from the FN line slope 5–7. Both these methods are possible but do not guarantee the precise result 8.…”

Section: Introductionmentioning

confidence: 99%

Thermionic field electron emission from graphite‐based nanomaterials

Lyashenko

Kleshch

Obraztsov

2011

Physica Status Solidi (b)

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Thermionic and field electron emissions governed by Richardson-Dushman and Fowler-Nordheim equations, respectively, normally coexist under typical experimental conditions. However, some carbon-based cathodes demonstrate deviations of temperature dependencies of the current-voltage characteristics from those predicted by these equations. The nature of deviations cannot be ascribed to insufficient variations of work function or surface topology, which result from temperature variations. In this work, the temperature dependencies of the electron emission characteristics were experimentally investigated for the nanographite film cathodes obtained by a chemical vapor deposition method. It was found that selfconsistent explanation of the experimental observations of the thermionic and field electron emissions from the nanocarbon cathodes may be given by taking into account the temperature dependence of free carrier density.

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“…We attempt to explore their field emission mechanisms of the two CNTs with different morphologies by evolving the physical parameters through the fitting of the temperature dependence on the emission characteristic via the semiconductor thermionic emission theory. [15][16][17] We also directly grew carbon nanotubes across two microelectrodes that were fabricated by photolithography, by this MPECVD method. A discontinuous step of the I-V curve for a single CNT across nickel electrodes was observed at low temperatures at high currents that are inaccessible by directly sprayed CNTs on electrodes.…”

Section: Introductionmentioning

confidence: 99%

Growth of Carbon Nanotubes at Low Powers by Impedance-Matched Microwave Plasma Enhanced Chemical Vapor Deposition Method

Chen¹,

Chang²,

Peng³

et al. 2005

J. Nanosci. Nanotech.

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A solo carbon nanotube (CNT) was successfully grown on nickel electrodes by a microwave plasma enhanced chemical vapor deposition (MPECVD) method equipped with an impedance-matched substrate holder with the reaction gases composed of hydrogen (H2), carbon dioxide (CO2), and methane (CH4) mixtures. An introduction of carbon dioxide gas before CNTs growth, the substrate temperature can easily be reached above 610 degrees C even heated at a low microwave power. This can be enunciated from fact that carbon dioxide inherits with higher bond energy for molecular dissociation, lower thermal conductivity, and higher heat capacity in comparing to other gases. The electron field emissions for randomly aligned CNTs and well-aligned CNTs grown by MPECVD and by radio frequency assisted hot-filament methods, respectively, are measured and compared. The higher field emission characteristic of the randomly aligned CNTs is presumed to be due to the protruded CNTs, which inheriting with less screening effect and manifesting with defects are crucial to play the effective emission sites.

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Field emission characteristic studies of chemical vapor deposited diamond films

Cited by 10 publications

References 26 publications

Ultrananocrystalline Diamond Membranes for Detection of High-Mass Proteins

Ultrananocrystalline Diamond Membranes for Detection of High-Mass Proteins

Thermionic field electron emission from graphite‐based nanomaterials

Growth of Carbon Nanotubes at Low Powers by Impedance-Matched Microwave Plasma Enhanced Chemical Vapor Deposition Method

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